获取阵列之间的差异

Question

my mind is going to explode. need to get the array element which has an id of 4 and 6 in array 1. basically its the difference of these two arrays. i tried using for each loop but i cant get the output that i want

Array 1(
 0 => array(
        id: 1
          )
 1 => array(
        id: 4
          )
 2 => array(
        id: 5
          )
 3 => array(
        id: 6
          )
 )

Array 2(

 0 => array(
        id: 1
          )
 1 => array(
        id: 5
          )
      )

the output i want:

new Array (
 0 => array (
      id: 4
            )
 1 => array (
      id: 6)
        )

what i've tried:

foreach ($array1 as $key => $value) {
    foreach ($array2 as $key2 => $value2) {
      if($value2['id']  !== $value['id']){
        $result['id'] = $value2['id'];
      }
    }
  }

Answer 1

Use array_diff_key to get your expected output.

array_diff_key($array1, $array2)

It compares the keys from array1 against the keys from array2 and returns the difference. This function is like array_diff() except the comparison is done on the keys instead of the values.